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P0621low severityPowertrain

Generator Lamp "L" Control Circuit

on 2017 Maserati Levante 3.0L V6 Twin Turbo · AWD

What this code means

The PCM detected a fault in the generator lamp (L terminal) control circuit. The charge warning indicator may not operate correctly.

Symptoms

  • Charge light stays on or off
  • Charging issues
  • Warning lamp malfunction

Common causes

  • Faulty generator L terminal circuit
  • Wiring open or short
  • Corroded connector
  • Faulty alternator

Diagnostic steps

  1. Check L terminal circuit continuity
  2. Inspect connectors for corrosion
  3. Test alternator output
  4. Repair circuit or replace alternator

Other Powertrain codes on this vehicle

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